Last week I launched an open source newsletter about product & tech marketing. Here's how it works: https://github.com/plainflow/plainflow-digested-week/

A few of my favourites:

- Snippet by Social Capital: http://us10.campaign-archive1.com/home/?u=d7f0f45160075006b2...

- Ben Evans: http://ben-evans.com/newsletter/

- A16Z: http://us7.campaign-archive2.com/home/?u=35c671b34bb40414916...